Charging for in warranty repair / no answer!!!!

*Repost seeing that I haven't gotten any feedback (no contact information provided and can't write a reply)*<br> <br> \Registered my Samsung Galaxy S4 for the warranty (SMS'd REG*IMEI NUMBER# to 34622 or something in that line on the day I received my phone).<br> <br> The screen broke and I sent in my phone in warranty period. I received an SMS that says "Out Of Warranty Charge / quote R4225.34\"". Please do explain why am I being charged if its sent in within warranty period?<br> <br> I try and call the number they provide in the SMS *** - MTN Repair Centre) but all it does is tell me operating hours and then \""Good Bye\"""